Internal-combustion engine.



e, w. HAURY. INTERNAL COMBUSTION IENGINE. APPLICATION FILED MAR. 26, IBM- 1,157,387. Patented 0013.19, 1915.,

' I a SHEETSSI-IEET 1.

G'eorge G. W. HAURY. INTERNAL COMBUSTION ENGINE. APPLICATION FILED MAR. 26, 1914.

1,157,387 Patented Oct. 19, 1915.

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G. W. HAURY.

INTERNAL COMBUSTION ENGINE. APPLICATION FILED mm. 26. 1914.

1,157,387. Patented Oct. 19,1915.

, I 3 SHEETS-SHEET a.

I Zju ticularly to four-cycle gas engines employenoaen w. Henna, or CHICAGO, rmnvors.

instead.

[ To all whom it may concern:

Be it known that I, GEORGE W. Hanna, a

v citizen of the United States, residing at Chi- "cago, in the county of Cook and State of Illinois, have invented certain new. and use 'ful Improvements in Internal-Combustion Engines.

of which the following is a specification.

My'inventionrelates to improvements in internal combustion'engines, and more parjing mechanically-operated valves to control.

V charges.

the admission of fuel charges to the cylinder, and expulsion of the spent charges.

One of the objects of my invention is to provide an engine of the slide-valve type, having improved and efiicient valve mecha nism.

" More specifically an object of my invention is to locate the'valve mechanism axially beyond the engine-cylinder so that the valve structure and its operating connections may be exteriorly. located with respect to the engine frame, for ready accessibility, interchangeability and attention, and so that the movable'valve parts are free from wearing engagement with the piston and its-cylinder and from direct action of the ignited Another object of my invention is to simplify and improve the valve construction, minimizing the number of parts and combining them for efi'iciency and durability in operation.

A further specific object of my invention is to provide a construction in which the external valve mechanism employing, for each partcontrolle'd thereby, only a single slide-member, is made gas tight by simple and adequate construction; and a further object is th provide a construction applicable to already-built engines so that, in many instances, puppet valve engines may be changed to my slide-valve construction.

Other and further objects of my invention will become apparent to those skilled in the art from the following description taken in conjunction with the accompanying draw-. ing in Which 1 Figure 1 is a central vertical section through a two cylinder engine; Fig. 2 is a side elevation of such engine; Fig. 3 is an enlarged perspective detail of the valve structure detached; Fig. i is a' perspective detail of one valve section; Fig. 5 is a detail of an operat' 1? cam, taken on line 55 of INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Application filed March 28, 1914; Serial No. 827,272.

engine'cylinder and having centrally an anthe spark plug is protectedly located. in-

-Patented fact. Elli-,- 1215.

Fig. 2; Fig. 6 is a horizontal section on line 6 6 of Fig. 1; Fig. 7 is a similar section on line 77 of Fig. 1;.andFig. 8 is a similar section on line 88 of i In the specific construe drawing, 10 indicates in inder four-cycle gas en of cylinders, of course, it

far as applicability of cerned. lChe cylinders 11, Wallet at 12, are mounted on c2; that bears the crank shaft, 145;, pistons 15 through the ccnnehtn such construction typifying e structure; although in the p invention it is preferable that shall have no lateral openings i in the range of movement cf til neg l 17 indicates any suitable gearlh driving Y5 1n one-to-two relation, a valveating shaft 18, which is preferably mounted above the engine head; the valve shaft iii-being mounted in split-bearings in the standards 19 carried by the engine frame, as one conto venient form of construction. Thus the valve shaft is readily removable.

Each cylinder has its valve mechanism, preferably constituting a detachable unit, mounted in a valve head which preferably is disposed longitudinally beyond the confines of the cylinder proper 11. In the specific construction shown each valve head 20 comprises a base plate 21 secured to the nular axial extension 22, of smaller diameter than the engine-cylinder 11, constituting the inner cylinder of the valve mechanism-and extending axially for a distance suitable to give adequate bearing to the valve member to be described. Above its lower end, and preferably below its upper end, said valve-cylinder 22 is closed by a transverse head wall 23 through which preferably extends a sparkplug 24, so that said cylinder is divided into the ignition chamber 25, which constitutes in eilect a continuation of the combustion chamber in cylinder 11, and an outer recess 26 in which take and exhaust ports 27 and 28, each extending through a considerable arc, open transversely into the chamber 25, preferably in the same plane and diametrically opposite each other; these ports preferably being located near theinner end of the extension 22. The exterior of the cylinder 22 is maprovided with packing rings 29 and 29' respectively located above and below the ports 2 28..

Surro11nding the inner valve cylinder 22 is-an external valve sleeve 30 having a base flange 31 bolted as at 32 through the base 21 to the engine frame. Intake and exhaust ports 33 and 33 open through the sleeve 30,.

preferably in a plane nonalining with the plane of ports 27 and 28, and preferably at a material distance axially beyond said ports 27, 28. The ports 33 and 33'are narrow horizontal openings of considerable arcuate extent and outwardly they open to chambers 34 and 35 which communicate respectively with the intake and exhaust .manifolds 36 and 37 lVhile the valve cylinder 22 and sleeve are preferably'separable parts detachable from the cylinder 11, these parts may all be cast in a single piece.

In the interspace between the cylinder 22 and sleeve 30, works the cylindrical slide valve structure generally indicated at 40.

The valve structure is preferably made in two independent complemental sections or members 41 and 42 jointly constituting a complete cylinder, diametrically divided. so

that, for simplicity of construction, the confronting radial surfaces 41 and 42 of the two slide sections may make direct sliding contact with each other, and so that the arcs of the ports may be made of great angular measurement, and consequently narrow.

Each valve member 41 and 42 has within it a passage for effecting communication between the two ports or port-couple 27-33 or 2833 in the cylinder. and sleeve, with which it coacts. 'Such passage, 43, in each valve member, is a vertical chamber having I a bottom opening, at 44, through the inner walland a top opening, at 45, through its outer wall. This construction,it will be observed, leaves a long uninterrupted bearing surface above the inner opening 44, and a long uninterrupted bearing surface below gated. bearing surfaces.

the outer opening 45, so that gas leakage along the valve from port-to-port is substantially impossible on account of the elon- Further it is mypreference that the valve structure should be somewhat shorter than the depth of the space between the valve-head-walls, so as to leave a clearance space 49 at the bottom to act as an oil-receiving chamber.

At its upper extremity, each valve section is provided with ear 50, connected by a suitable arm 51 extending from the eccentric strip 52 encircling the eccentric 53 on the valve shaft '18; this-being one effective 1 connection for silently operating the slide valve section.

It' will be observed that the valve membersiare readily eparable from the walls of the head,so that inspection and repair may be made with minimum labor. It will further be observed that the construction enables the cylinderof the engine to be made without lateral opening in the combustion chamber proper, and that the construction herein described maybe applied to puppetvalve engines already built, substituting the valve-head in lieu of the ordinary cylinder head, and so substituting slidevalve action for the ,puppet valve action.

In operation. it will be understood that the eccentrics operate the valves in proper time to open the exhaust valve during the scavenging stroke of the engine, and, immediately upon commencement of the intake stroke to open the intake valve, each valve section when in open position affording a large and effective passage-way vertically;

through thewalls of the valve member from the port in the cylinder wall of the head to vention, it will be'apparent to those skilled;

in the art that numerous changes in the design and precise arrangement might be made. without departure from the spirit of my invention and within'the'scope of the appended claims.

Having described my invention, what I claim is Lill . 1. In a gas engine, a structure encircling a combustion space and comprising concentric stationary walls separated by arcuate spaces, said wall structure having in opposite sides thereof intake and exhaust ports respectively, said ports made through boththe inner and outer walls, two opposed arcuate valve-members, respectively controlhng the inlet and outlet ports, sliding in said arcu'ate' spaces, and means for independently operating said valves.

2. In a gas engine, a structure encircling acombustion space and comprising concen tric stationary walls separated by arcuate spaces, open at one end said wall structure having in opposite sides thereof intake and exhaust ports respectively, said ports made through both the inner and outer walls, two opposed arcuate valvemembers, respectively controlling the inletand outlet ports, sliding in said arcuate spaces, and removable through the open end thereof, and means for independently operating said valves.

means? controlling a port-couple; and means for,

independently sliding said valve-members.

4. in a gas engine, a structure encircling a combustion space and comprising two Sta-- tionary, spaced-apart, concentric walls having port-couples therethrough, in diii'erent planes, the port-couples in opposite sides of the wall structure being respectively intake and exhaust ports, two arcuate valve memhers slidable axially in the space between said walls, each controlling a port-couple and having oppositely facing openings in different planes connected by an internal passage througlr the valve member; and mans for independently sliding said valve members.

'5. In a gas engine, a structure encircling a combustion space and comprising two stationary, spaced-apart, concentric walls having port-couples therethrough, in different planes, the port-couples in opposite sides of the wall structure being respectively intake and exhaust ports, two arcuate valve members slidable axially in the space be tween said walls, each controlling a portcouple and having oppositely facing openings in different planes connected by an internal passage-through the valve member; packing rings on the inner wall above and below the ports iii said wall coacting with the inner surfaces of the valve-members 6. In a gas engine, the combination with a cylinder, of a valve structure providing two axially extending, curved fixed walls having ports at difi'erent planes, and slide valve members working between said walls and having longitudinal. passages therethrough open only at the passageends for connecting said ports.

7. a cylinder, of a valve head comprising axially extending parallel fixed walls having ports therethrough at difierent planes, slide valve-means "axially movable'between said walls and having longitudinally extending passage waysopen only at the passage ends for establishing communication between said ports in the parallel walls,vand means foriactuating said valve structure.

8.111 a gas engine, the combination with a cylinder, of a detachable valve head comprising an inner-cylinder transversely closed above its lower end and having lateral ports below said closures, an outer sleeve spaced apart from said cylinder, and having lat eral portstherethrough, two arcuaite valve members mounted between said cylinder bersindependently.

a gas'engine, the combination with sleeve, and means for independently g said valve members, there being in the valve sections passages for effecting communication between the inlet ports and the outlet ports respectively of the cylinder and sleeve.

9. fl lemombination with a gas engine cylind'enof a valve head comprising an in ner cylinder transversely closed above its lower end and having ports below said 010-. sure, a. sleeve encircling and spaced apart from said cylinder and having ports at a different plane from the ports in; said cylinder, two arcuate slide-valve members be tween the cylinder and sleeve having longitudinally extending passages for efiecting communication respectively between' a port of the cylinder and the port of the sleeve, and means to actuate said slide valve mem- 10. The combination with a gas engine cylinder, of a valve head comprising an inner cylinder transversely closed above its lower end and having ports below said closure, a sleeve encircling and spaced apart from said cylinder and having ports at a different plane from the ports in said cylinder, two arcuate slide valve members be: tween the cylinder and sleeve having longitudinally extending passages for effecting.

communication respectively between a port of the cylinder and the port ot the sleeve, means to actuate said slide valve members independently, and packing rings carried by said cylinder co-acting with the inner surface of said slide valve members.

11. The combination with a gas engine cylinder having closed peripheral walls, a detachable head for said cylinder compris ing a cylindrical extension having acombustion space smaller in diameter than the cylinder and axially communicating ther with and having ports through its side walls, a sleeve surrounding and spaced apart from said cylindrical extension having ports in its side wall. and two semi-cylindrical valve members sliding between said cylinder and sleeve, each having a passage for com munication between-one of the extension ports and one of the sleeve ports, and means.

a' detachable head comprising a flanged,

transversely closed cylindenafianged openended sleeve, said head, cylinder and sleeve bolted through their flanges to the gasengine cylinder and providing between them an annular space, there being port-couples opening through said --head-members, said couples oppositely placed, and the ports of.

each couple in difierent planes, two axially slidable, arcuate valves in said annular space each controlling a pcn't-couple, and

,valve-members.

fxne'ans for independently reciprocating said i :13. In a gas engine, a structure encircling :a combustion chamber, having its side Walls hollowed to provide space for vertical slide valves and having an intake port-couple and an exhaust port-couple each port couple opening in both opposing Walls of its space, tWovertically reciprocatable valve-members having transverse passages respectively controlling said inlet and exhaust )o-rts, and meansfor independently reciprocating said valve-members. a

14. In a gas engine, a cylinder having closed peripheral Walls, astructure, surrounding a combustion space that is closed at one end and at its other end opens to said cylinder, said structure having its side walls hollowed vertically to provide space for vertically slidable valves, and having intake and exhaust port openings leading to the combustion space, two vertically reciproca-table valve-members for the intake and exhaust ports respectively, each having a transverse passage controlling its associated ports, a shaft beyond said valves, and independent connections from said shaft to said valves for working the latter.

15. In a gas engine, a cylinder, a structure surrounding a combustion space that is closed at one end and 18 open at its other end to the cylinder, said structure having spaced-apart Wallsaffording slide-space- 16. In a gasengine, a cylindena struc- 'turesurrounding a combustion space that is open at one end to the cylinder, said structure having spaced-apart annular Walls provided'vvith intake and outlet ports at'difi'erent peripheral points, twovertically reciprojcable valves controlling the respective ports,

said valves jointly making an annulus and contacting edge-to-edge, and means for reciprocating said valves.

In testimony-whereof I hereunto set my hand in the presence of two subscribing Witnesses.

GEORGE W. HAURY. .In the presence ot'- I I W'ILLIA KAIsER,

ROBERT J. PINKnn'roN 

